South Korean sprinter Kim Kuk-young set the men's 100m national record with 10.07 seconds on Tuesday.

Kim won the men's 100m final at the Korea Open International Athletics Competition in Jeongseon, some 210 kilometers east of Seoul, with a record-breaking time.

Kim broke his own record twice in three days on the same track. On Sunday, Kim ran the 100m in the semifinals of a different competition in the then-record time of 10.13 seconds. Later in the final, Kim posted a wind-aided, unofficial time of 10.07.

It was not recognized as an official record because a tailwind was blowing at 3.6 m/s. The maximum legal tailwind is 2.0 m/s.

There were no such issues on Tuesday, as Kim also finished under the world championships' qualifying time of 10.12, set by the International Association of Athletics Federations (IAAF). This year's world championships will be held in London starting on Aug. 4. (Yonhap)